Phase Oneâ€™s raw workflow software Capture One 4.1 is being previewed at Photo Imaging Expo in Tokyo this week at the launch of the companiesâ€™ new 645 open medium format digital camera platform.

The updated version will include support for the 22-megapixel Mamiya ZD camera and digital back in line with the strategic alliance between Phase One and Mamiya Digital Imaging.

Capture One 4.1 will also include two new technologies initially available for Phase One digital backs, built on Phase Oneâ€™s expertise in digital backs and thorough testing with a selection of Mamiya lenses.

The Capture One workflow software is targeted at fashion photographers who demand high resolution, high capture rates and instant high quality previews for evaluation of image composition, exposure, and focus. The company said it works best in tethered shooting with its virtually instantaneous image transfer and preview generation even with resolutions up to 39 mega pixels when using Phase One backs.

Capture One 4.1 is a free update to all users of Capture One ($129); it will be available for download beginning with volume production shipments of the new Phase One 645 Camera platform in Q2 2008.